| 1 | // RUN: %clang_cl_asan %Od %p/dll_host.cpp %Fe%t |
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| 2 | // RUN: %clang_cl_asan %LD %Od %s %Fe%t.dll |
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| 3 | // RUN: not %run %t %t.dll 2>&1 | FileCheck %s |
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| 4 | |
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| 5 | #include <malloc.h> |
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| 6 | |
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| 7 | extern "C" __declspec(dllexport) |
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| 8 | int test_function() { |
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| 9 | int *buffer = (int*)malloc(size: 42); |
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| 10 | free(ptr: buffer); |
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| 11 | buffer[0] = 42; |
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| 12 | // CHECK: AddressSanitizer: heap-use-after-free on address [[ADDR:0x[0-9a-f]+]] |
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| 13 | // CHECK: WRITE of size 4 at [[ADDR]] thread T0 |
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| 14 | // CHECK-NEXT: test_function {{.*}}dll_malloc_uaf.cpp:[[@LINE-3]] |
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| 15 | // CHECK-NEXT: main {{.*}}dll_host |
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| 16 | // |
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| 17 | // CHECK: [[ADDR]] is located 0 bytes inside of 42-byte region |
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| 18 | // CHECK-LABEL: freed by thread T0 here: |
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| 19 | // CHECK-NEXT: free |
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| 20 | // CHECK: test_function {{.*}}dll_malloc_uaf.cpp:[[@LINE-10]] |
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| 21 | // CHECK-NEXT: main {{.*}}dll_host |
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| 22 | // |
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| 23 | // CHECK-LABEL: previously allocated by thread T0 here: |
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| 24 | // CHECK-NEXT: malloc |
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| 25 | // CHECK: test_function {{.*}}dll_malloc_uaf.cpp:[[@LINE-16]] |
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| 26 | // CHECK-NEXT: main {{.*}}dll_host |
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| 27 | return 0; |
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| 28 | } |
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| 29 | |
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